package com.Wu;

import com.google.gson.Gson;


import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.time.LocalDateTime;
import java.util.List;


public class Util {
    public static void writerData(HttpServletResponse resp, List list)  {
        //9.将List对象转为JSON格式字符串
        Gson gson = new Gson();
        String result = gson.toJson(list);
        //10.获取输出流
//10.1、设置响应的内容类型
        resp.setContentType("application/json");
//10.2、设置响应的数据编码格式
        resp.setCharacterEncoding("utf-8");
//10.3、输出响应数据
        try {
            resp.getWriter().print(result);
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    //四川订单编号
    public static String createOrderId() {
        LocalDateTime now=LocalDateTime.now();
        return  ""+now.getYear()+(now.getMonthValue()<10?"0"+now.getMonthValue():now.getMonthValue())
                +(now.getDayOfMonth()<10?"0"+now.getDayOfMonth():now.getDayOfMonth())
                +now.toLocalTime().toString().replace(".","").replace(":","");
    }
}


